DOM Blowout Preventer

Alberta Petroleum Industries has begun manufacturing its DOM Annular BOP entirely in Canada! This is truly a MADE IN CANADA product! From the original engineering and design, to castings, machining, QC inspection, final testing and application of the API 16A monogram, this is a Canadian made product.

Snubbing and Standard Configuration

The DOM comes in two configurations

1) The DOM Snubbing spherical, utilizing our patented wiper seal technology (Patent #’s CAN 2413112, US 2634439) which greatly enhances it functionality in snubbing operations.

2) The DOM-SS is a replica and interchangeable with the venerable Shaffer Bolted Top Spherical API 16A 4th Edition

As a long standing API 16A and Q1 accredited facility, our products are manufactured in accordance with those guidelines. The DOM is designed and manufactured to API 16A 4 edition.

Size/Pressure Ratings

The DOM is currently offered in 7 1/16 3,000 PSI or 5000 PSI configurations, with options of nitrile or natural rubber packing elements.


Proprietary SeaIs*

The longer rectangular seal prevents damage caused by rolling in the groove, increasing seal reliability and life.

Proprietary Locking Wiper*

Profile locks into groove and is retained by the seals to prevent it from extruding.

Extra Large Wear Band*

Provides longer life and added stability for the piston.

Through Bolted Nylock Nuts

Offer a strong and reliable connection that will not loosen accidentally. Simple removal with overhead rigging, allowing easier bag changes with no internal threads to stick or gall up.

Nitrided or Teflon coated Piston

These coatings improve wear life of the piston, meaning longer intervals between major repairs. Also provides corrosion resistance. Either Nitriding or Teflon coating is an option.

4 x Alignment Pins

Positive alignment and improved retention of the adapter ring which prevents flexure and binding during lid removal. Allows for hassle free element changes.


Contract Review

Product Details

Specification API 16A, 4th Edition
Nominal Bore Size 7 1 / 16 " 9" as per API 6A, 20th Edition
Maximum Working Pressure 3000 PSI 5000 PSI
Nominal Dimensions 7 1/16 5000: Height - 3 1 ", Diameter - 29.0" : Height - 33", Diameter - 35 1 / 2 "
End Connections - Upper 7 1 / 16" 5000(R46) Studded, Studded
End Connections - Lower 7 1 / 16" 5000(R - 46) Flanged, Flanged
Metallic Materials Temperature Rating Code T - 20: -20°F to 250°F(-29°C to 121°C)
Wellbore Elastomeric Materials Tenperature Rating Code AA. - 15°F to 180°F(-26°C to 82°C)
Non - Wellbore Elastomeric Materials Tenperawre Rating Code AA. - 15°F to 180°F(-26°C to 82°C)
Closure Bolting NACE MR - 0175 - 2003 compliant bolting & nuts on body correction
Application Land based drilling & service rigs
Element Determined bv Customer
Paint Details Determined by Customer
Seal Configuration Snubbing or Standard
Post Delivery Contract Arrangements Regulatory and Safety Requinements
Service on warrarty claims (12 months) NACE MR0175